Lister harrow



L. R. BAYLESS LIsTER HARRow Dec. 8, 1942.

Filed June 30, 1941 d m i fmfwj, f /Y if Q u .u n.. on.. .u n 2 M r f, V f 5 Z o. a y o i 9 M /V if one will suiiice. Yprises a pair of identical runner boards I4 and" i5, each tapering in Vwidthfronfi their rear end to Vtheir forward end such that the outer edge I is inclined with relation to the'inner edge II and Patented Dec. 8, 1942 UNiTED ASTATES PATNT OFFICE k2,304,671 LIsTEn HARRoW Lyonel Roscoe Bayless, Protection, Kans.

Application June 30, 1941, Serial No. 400,436

'7 Claims.

This invention relates .to Van improvement in harrows especially adapted for the cultivation .of

crops planted with a lister; and the principal object of this invention is to prov-ide a multi-section harrow each section having a pair of runners so formed and related to Aeach Aother that they -will t `closely in a `furrow, and each runner beopen to the hot sun, -w-ill adjust itself to uneven listing, and either ynarrow or wide rows. v

With the foregoing and other objects in view,

the invention resides in the novel arrangement and combination of Ipar-ts yand in the Ydetails of ccnstruction hereinafter described and claimed,

it being understood that changes .in the precise embodiment of the invention hereinafter 'disclosed maybe made within `the Ascope of what is claimed Vwithout Adeparting from Vthe spi-rit .of

4the invention. f

A practical embodiment of the invention is lillustrated in the accompanying` drawing wherein:

Figure l is a plan view of a lister harrow constructed in accordancewith this invention, showing the weight boX removed from fone of the harrow sections and with the teeth shown-on one of the runner boards only.

Figure 2 is a transverse -sectional view of one harrow section taken'on'line 2 2, Fig. l.

Figure 3 is a transverse sectional -view of the I):

same harrow unit taken on line A3 3, Fig. 1.

Figure 4 is a detail View Von line 4 4, Fig. l,

'showing tooth mounting on a yrunner board.

Figure 5 is a detail sectional View online 5 5, Fig. l, showing yoke connection oi a harrow section tongue to transverse draft bar.

Referring to the drawing in detail, Ill, "I-I and I2 denote generally three identical -harrow sections 'arranged in 'side by side relationship.

While only three sections have been shown it is'to 'be understoodV that the invention contemplates the use of any desired number. As the harrow sections are identical a vdetailed description of Thus, 'a harrow section com'- vwhich outer Aedge I6 is vrounded at 'the 'forward' 'end of the runner board, as 'at 48. The runner boards I4 and I 5 are disposed in a 45 angular relationship to the horizontal, as clearly shown in Figs. 2 and 3, with their inner edges I1 lowermost and are retained in this iixed relationship by a forward brace 'I9 and a rear brace 20. Preferably the runner boards It and I5 are arranged in lengthwise inclined relation such that the forward ends thereof are spaced apart a closer distance than the rear ends thereof, as clearly shown in Fig, l.

The forward brace .I9 is formed of a metallic strap and shaped to provide a horizontal portion 2|k and downwardly and inwardly inclined leg portions 22, each at a 45 angle to the horizontal portion ZI. Each leg 22 is rigidly secured to its associated runner board by a pair of bolts or rivets 23. Mounted on the horizontal portion 2l are a pair of angle brackets '24 rigidly secured thereto as by the rivets 25, and each equally spaced from the longitudinal center of the horizontal portion which lies in Vthe vertical center plane between the runner boards I4 and l5. Bridging the yangle brackets 24 is an inverted U- shaped guide and support 26, the legs 2l of which are disposed inwardly of vand in abutting engagement with the vertical legs oi the angle brackets 24 and are secured thereto in vertically .adjustable position by means of the bolts 28. As shown, see Fig. 2, the verticall legs of th'e angle brackets 24 are each provided with a row of openings 29, to permit this vertical adjustment.

The.rear brace comprises superposedI brace elements Sii and 3| -each formed of a metal strap. The lower brace element is shaped to provide a horizontal portion 32 and downwardly inwardly inclined legs 33, at a 45 angle to the horizontal portion 32, veach leg being rigidly secured to an associated runner board by a bolt o`r rivet 34. The kupper brace element 3i likewise is shaped to provide a horizontal portion 35 and upwardly outwardly inclined legs 35, at a 45 angle to the horizontal portion 35, each leg being rigidly secured to an associated runner board by a bolt or rivet 3'I. At its center the horizontal portion 35 is bowed upwardly as at 38 to dene with the horizontal portion .32 a bearing support and connection 39 to be hereinafter described. Disposed on each side of .the bearing support 39 is a Z-angle bracket 40 rigidly secured at its lower horizontal leg to the rear brace 2i) by means of a rivet 4I. The upper horizontal legs of the brackets 40 are directed towards their adjacent runner boards and are in the same horizontal plane, and seated thereon -is a Weight vbox 42 Suitable forms of weight means (not shown) are adapted to be placed in the weight box 42 of each harrow section to hold the same down in the furrow and to provide the necessary traction in the use thereof in the manner well known.

Each harrow section is provided with a pull bar or tongue 45 formed of tubular or solid bar stock, the inner end 46 of which projects through the bearing support 39 wherein it has a loose fit and.is pivotally secured therein by the vertical pivot bolt 41 whereby to permit lateral swinging movement. The outer end of the tongue 45 is flattened as at 48 and has fixed thereto by means of the rivet 49 an arm bracket 5D to denne with the attened end 48 a yoke 5I.

The tongues 45 of each of the harrow sections are each of the same length and are each attached by their yoke end 5,0 to a draft bar 52 seated therein and connected together by the pivot bolt 53, in the manner clearly shown in Fig. 5. The tongue 45 extends through the U-shaped guide and support 26 mounted on the brace I9, the support 26 rests on the tongue 45 v:and functions to hold up the forward end of the harrow unit in the manner readily apparent,

and may be adjusted in the manner as described above in accordance with the type of tractor to which the harrow is hitched. The opening in the inner end 45 of the tongue 45 through which the vertical pivot bolt 41 extends is made slightly oversize which along with the loose fit in the bearing support 39 will be sufficient to allow the required slight vertical swinging movement of the harrow section relative to the tongue 45 on the pivot bolt 41, thus permitting the support 26 to rest on said tongue in all adjusted positions of the support 26. The draft bar 52 is provided with a row of openings 55 at each end thereof `and at the center, arranged in longitudinal alignment to selectively receive therein the pivot bolt '53. A pair of draft links 56 are pivotally connected at their inner ends at 51 to the draft b-ar 52 and at their outer ends to a hitch ring 58 which is adapted to be connected by means of a clevis (not shown) to a tractor draw bar `(not shown) in the manner well known.

Each runner board has mounted thereon a plurality of rows of steel teeth 60. As the runner boards are preferably of a thickness not less than two inches, the teeth 6B which may be in the form of spikes may be driven through the board.' It is desirable that the teeth be inclined in a rearwardly direction with reference to the runner board preferably at a 55 angle, see Fig. 4,

and to project downwardly therefrom a substantial distance. At this angle the teeth are securely held by the board and will not drag trash, etc., but will stay clean.

The advantages of a harrow constructed in accordance with the invention as described above will be readily apparent to those skilled inY the art of agriculture.

Having thus described the invention, what is claimed is:

1. A harrow device of the character described cornprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, a plurality of rows of teeth mounted on each runner board, forward and rear brace means connecting said runner boards in spaced inclined relation, a pull tongue extending between said runner boards and pivotally connected at one end to the rear brace means, means connecting the other end of the pull tongue to a draft bar, -and guide means on the Vforward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards.

2. A harrow device of the character described comprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, a plurality of rows of teeth mounted on each runner board, forward and rear brace means connecting said runner boards in spaced inclined relation, said runner boards being each transversely inclined at a 45 angle to the horizontal in a direction towards each other and with their lower edges in the same horizontal plane, and longitudinally inclined towards each other in a direction toward their forward ends, a pull tongue extending between said runner boards and pivotally connected at one end to the rear brace means, means connecting the other end of the pull tongue to a draft bar, and guide means on the forward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner lboards and to guide said pull tongue for lateral movement relative to said runner boards.

3. A harrow device of the character described comprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, each runner board having a straight inside edge and an inclined outside edge directed forwardly of the runner board with its forward end curved to meet said inside edge whereby the runner board tapers in width from its rear end to its forward end, forward and rear brace means rigidly connecting said runner boards in spaced inclined relation, a plurality of rows of teeth mounted on each runner board, a pull tongue extending between said runner boards, bearing means on the rear brace means receiving the rear end of said pull tongue, vertical pivot means connecting said pull tongue rear end to said bearing means, yoke means on the other end of said pull tongue, a transverse draft bar mounted in said yoke means and pivotally connected thereto, and guide and support means on the forward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards.

4. A harrow device of the character described comprising a plurality oi' like harrow sections, each harrow section comprising a pair of runner boards, each runner board having a straight i11- side edge and an inclined outside edge directed forwardly to the runner board with its forward end curved to meet said inside edge whereby the runner board tapers in width from its rear end to its forward end, forward and rear brace means rigidly connecting said runner boards in spaced inclined relation, said runner boards being each transversely inclined at a 45 angle to the hori zontal in a direction towards each other and with their lower edges in the same horizontal plane, and longitudinally inclined towards each other in a direction toward their forward ends, a plurality of rows of teeth mounted on each runner board, each tooth being inclined in a rearward direction at a 55 angle to the plane of the runner board, and projecting a substantial distance below the underside of its associated runner board, a pull tongue extending between said runner boards, bearing means on the rear brace A`means receiving the rear end of said pull tongue,

vertical pivot means connecting said pull tongue rear end to said bearing means, yoke means on the other end of said pull tongue, a transverse draft bar mounted in said yoke means and pivotally connected thereto, and guide and support means on the forward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards.

5. A harrow device of the character described comprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, a plurality of rows of teeth mounted on each runner board, forward and rear brace means connecting said runner boards in spaced inclined relation, a pull tongue extending between said runner boards and pivotally connected at one end to the rear brace means, means connecting the other end of the pull tongue to a draft bar, and guide means on the forward brace means engaging Aan intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards, said guide means including a pair of spaced angle brackets mounted on the forward brace means, an inverted U-shaped bracket bridging said angle brackets, and vertically adjustable means connecting said U-shaped bracket to said angle brackets.

6. A harroW device of the character described comprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, a plurality of rows of teeth mounted on each runner board, forward'and rear brace means connecting said runner boards in spaced inclined relation, said runner boards being each transversely inclined at a, 45 angle to the horizontal in a direction towards each other and with their lower edges in the same horizontal plane, and longitudinally inclined towards each other in a direction toward their forward ends, a pull tongue extending between said runner boards and pivotally connected at one end to the rear brace means, means connecting the other end of the pull tongue to a draft bar, a weight carrying box detachably mounted on said rear brace means,

and guide means on the forward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards.

7. A narrow device of the character described comprising a plurality of like harrow sections, each harrow section comprising a pair of runner boards, each runner board having a straight inside edge and an inclined outside edge directed forwardly of the runner board with its forward end curved to meet said inside edge whereby the runner board tapers in width from its rear end to its forward end, forward and rear brace means rigidly connecting said runner boards in spaced inclined relation, said runner boards being each transversely inclined at a angle to the horizontal in a direction towards each other and with their lower edges in the same horizontal plane, and longitudinally inclined towards each other in a direction toward their forward ends, a plurality of rows of teeth mounted on each runner board, each tooth being inclined in a rearward direction at a angle to the plane of the runner board, and projecting a substantial distance below the underside of its associated runner board, a pull tongue extending between said runner boards, a Weight carrying box detachably mounted on said rear brace means, bearing means onrthe rear brace means receiving the rear end of said pull tongue, vertical pivot means connecting said pull tongue rear end to said bearing means, yoke means on the other end of said pull tongue, a transverse draft bar mounted in said yoke means and pivotally connected thereto, and guide and support means on the forward brace means engaging an intermediate portion of said pull tongue whereby to support the forward end of said runner boards and to guide said pull tongue for lateral movement relative to said runner boards, said guide and (support means including a pair of spaced angle brackets mounted on the forward brace means, an inverted U-shaped bracket bridging said angle brackets, and vertically adjustable means connecting said U-shaped bracket to said angle brackets.

LYONEL ROSCOE BAYLESS. 

